Introduction To Transformers

Introduction To Transformers


The eleventh lesson in the Electrical Theory for Troubleshooters Course, this lesson presents the basic parts of a transformer and their function. The lesson explains turns ratio and its relationship to a transformer’s input and output voltages. The participant is also cautioned regarding the dangers of improper transformer connections.

Module Objectives

  • Identify and describe the functions of the basic transformer parts.
  • Explain relationship between a transformer’s turns ratio and input and output voltages.
  • Describe the danger in reversing or stepping-up the voltage.


These lessons are excellent for the training of electricians and electronic technicians as well as for the multi-craft training needs of process and manufacturing facilities. The first four lessons in this course cover basic electrical concepts including Ohm’s Law and Kirchhoff’s Law, as well as the use of these laws to determine voltage, current, and resistance in series and parallel circuits.


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